RANDOLPH, N.J. — Zonefirst, a manufacturer of HVAC zoning equipment, has launched new products designed to meet A2L refrigerant regulations. As the HVAC industry transitions towards more ...
ATLANTA — Dick Foster has been preaching the positives of zoning for years. As the owner of ZoneFirst, he has dedicated his life and career to this technology, and it has been a bit of an uphill ...
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